[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 57.041825][ T27] audit: type=1800 audit(1582531440.530:25): pid=8819 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 57.060618][ T27] audit: type=1800 audit(1582531440.540:26): pid=8819 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 57.095421][ T27] audit: type=1800 audit(1582531440.540:27): pid=8819 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. syzkaller login: [ 69.665890][ T8971] IPVS: ftp: loaded support on port[0] = 21 [ 69.708150][ T8971] chnl_net:caif_netlink_parms(): no params data found [ 69.739111][ T8971] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.746606][ T8971] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.754166][ T8971] device bridge_slave_0 entered promiscuous mode [ 69.762607][ T8971] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.769792][ T8971] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.777504][ T8971] device bridge_slave_1 entered promiscuous mode [ 69.793060][ T8971] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.803702][ T8971] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.820869][ T8971] team0: Port device team_slave_0 added [ 69.827844][ T8971] team0: Port device team_slave_1 added [ 69.841102][ T8971] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.848076][ T8971] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 69.874139][ T8971] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.886488][ T8971] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.893542][ T8971] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 69.919470][ T8971] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.026801][ T8971] device hsr_slave_0 entered promiscuous mode [ 70.095471][ T8971] device hsr_slave_1 entered promiscuous mode [ 70.187511][ T8971] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.227805][ T8971] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.278042][ T8971] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.317907][ T8971] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.367321][ T8971] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.374419][ T8971] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.382033][ T8971] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.389143][ T8971] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.424500][ T8971] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.438755][ T2809] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.449102][ T2809] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.456928][ T2809] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.464528][ T2809] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 70.475767][ T8971] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.486003][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.494346][ T3147] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.501479][ T3147] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.511947][ T2809] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.521048][ T2809] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.528137][ T2809] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.547644][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.556510][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.566661][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.577131][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.589309][ T8971] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.589788][ T8971] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.607798][ T8971] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.622433][ T2774] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.629966][ T2774] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.639483][ T2774] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.657604][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.675189][ T8971] device veth0_vlan entered promiscuous mode [ 70.682928][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.691513][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.699516][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.712702][ T8971] device veth1_vlan entered promiscuous mode [ 70.730295][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 70.739992][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.750893][ T8971] device veth0_macvtap entered promiscuous mode [ 70.761920][ T8971] device veth1_macvtap entered promiscuous mode [ 70.777045][ T8971] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.784322][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.793262][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.801093][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.809708][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.820039][ T8971] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.827804][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.836751][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 70.992087][ T8971] ------------[ cut here ]------------ [ 70.998391][ T8971] kobject: (000000005127ca6c): attempted to be registered with empty name! [ 71.007537][ T8971] WARNING: CPU: 0 PID: 8971 at lib/kobject.c:236 kobject_add_internal+0x12c/0xaa0 [ 71.016826][ T8971] Kernel panic - not syncing: panic_on_warn set ... [ 71.023390][ T8971] CPU: 0 PID: 8971 Comm: syz-executor318 Not tainted 5.6.0-rc2-syzkaller #0 [ 71.032036][ T8971] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.042069][ T8971] Call Trace: [ 71.045339][ T8971] dump_stack+0x1fb/0x318 [ 71.049657][ T8971] panic+0x264/0x7a9 [ 71.053545][ T8971] ? __warn+0x105/0x210 [ 71.057704][ T8971] ? kobject_add_internal+0x12c/0xaa0 [ 71.063051][ T8971] __warn+0x209/0x210 [ 71.067005][ T8971] ? kobject_add_internal+0x12c/0xaa0 [ 71.072374][ T8971] report_bug+0x1b6/0x2f0 [ 71.076689][ T8971] ? kobject_add_internal+0x12c/0xaa0 [ 71.082049][ T8971] do_error_trap+0xcf/0x1c0 [ 71.086529][ T8971] do_invalid_op+0x36/0x40 [ 71.090914][ T8971] ? kobject_add_internal+0x12c/0xaa0 [ 71.096256][ T8971] invalid_op+0x23/0x30 [ 71.100412][ T8971] RIP: 0010:kobject_add_internal+0x12c/0xaa0 [ 71.106361][ T8971] Code: 64 f9 41 be fe ff ff ff e9 59 06 00 00 e8 4c 63 64 f9 eb 05 e8 45 63 64 f9 48 c7 c7 83 8b 08 89 4c 89 ee 31 c0 e8 f4 28 36 f9 <0f> 0b 41 be ea ff ff ff e9 2f 06 00 00 48 89 45 b8 e8 1e 63 64 f9 [ 71.125933][ T8971] RSP: 0018:ffffc900077e71b0 EFLAGS: 00010246 [ 71.131965][ T8971] RAX: 5b8212945f64c000 RBX: 0000000000000000 RCX: ffff888091c3a2c0 [ 71.139909][ T8971] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 71.147849][ T8971] RBP: ffffc900077e7230 R08: ffffffff81600324 R09: ffffed1015d46618 [ 71.155792][ T8971] R10: ffffed1015d46618 R11: 0000000000000000 R12: dffffc0000000000 [ 71.163752][ T8971] R13: ffff88809fb88668 R14: 1ffff11013f710cd R15: 0000000000000000 [ 71.171719][ T8971] ? vprintk_emit+0x2d4/0x3a0 [ 71.176376][ T8971] ? kobject_set_name_vargs+0x4c/0x120 [ 71.181860][ T8971] kobject_add+0xef/0x190 [ 71.186188][ T8971] device_add+0x4b2/0x1ad0 [ 71.190580][ T8971] ? rxe_ib_alloc_hw_stats+0x7b/0x120 [ 71.195923][ T8971] ? rdma_counter_init+0x26d/0x3f0 [ 71.201020][ T8971] ib_register_device+0x11df/0x15b0 [ 71.206246][ T8971] ? crypto_alloc_tfm+0x335/0x360 [ 71.211248][ T8971] rxe_register_device+0x3f6/0x530 [ 71.216334][ T8971] rxe_add+0x1373/0x14f0 [ 71.220564][ T8971] rxe_net_add+0x79/0xe0 [ 71.224783][ T8971] rxe_newlink+0x31/0x90 [ 71.229001][ T8971] nldev_newlink+0x403/0x4a0 [ 71.233627][ T8971] ? nldev_set_doit+0x340/0x340 [ 71.238453][ T8971] rdma_nl_rcv+0x701/0xa20 [ 71.242859][ T8971] netlink_unicast+0x766/0x920 [ 71.247676][ T8971] netlink_sendmsg+0xa2b/0xd40 [ 71.252424][ T8971] ? netlink_getsockopt+0x9f0/0x9f0 [ 71.257598][ T8971] ____sys_sendmsg+0x4f7/0x7f0 [ 71.262342][ T8971] __sys_sendmsg+0x1ed/0x290 [ 71.266941][ T8971] ? handle_mm_fault+0x173a/0x2900 [ 71.272032][ T8971] ? __kasan_check_write+0x14/0x20 [ 71.277119][ T8971] ? __up_read+0x231/0x740 [ 71.281515][ T8971] ? check_preemption_disabled+0xb4/0x260 [ 71.287232][ T8971] ? debug_smp_processor_id+0x9/0x20 [ 71.292485][ T8971] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 71.297917][ T8971] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 71.303602][ T8971] ? do_syscall_64+0x1d/0x1c0 [ 71.308257][ T8971] __x64_sys_sendmsg+0x7f/0x90 [ 71.312996][ T8971] do_syscall_64+0xf7/0x1c0 [ 71.317475][ T8971] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.323337][ T8971] RIP: 0033:0x4433f9 [ 71.327203][ T8971] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 71.346778][ T8971] RSP: 002b:00007ffd5d50d798 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.355156][ T8971] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004433f9 [ 71.363114][ T8971] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 71.371067][ T8971] RBP: 00007ffd5d50d7b0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 71.379012][ T8971] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 71.386969][ T8971] R13: 0000000000404990 R14: 0000000000000000 R15: 0000000000000000 [ 71.395951][ T8971] Kernel Offset: disabled [ 71.400311][ T8971] Rebooting in 86400 seconds..